Optical Properties Of Dye Molecules Adsorbed On Fractal Structures

We present preliminary measurements of the optical properties of Rhodamine B molecules adsorbed or trapped in porous matrices such as Vycor 7930 glass, silica xerogels and aerogels. The electronic transfer between donor and acceptor molecules adsorbed on such fractal structures is also discussed; a fast sub-picosecond resolution experiment is proposed to study this process. © 1986.821-3165170Mandelbrot, (1982) The Fractal Geometry of Nature, , Freeman, LondonAlexander, Orbach, Density of states on fractals : « fractons » (1982) Journal de Physique Lettres, 43, pp. L-625Rammal, Toulouse, (1983) J. Phys. Lett., 44, pp. L-13Evesque, (1983) J. de Phys., 44, p. 1217Klafter, Blumen, (1984) J. Chem. Phys., 80, p. 875Even, Rademann, Jortner, Manor, Reisfeld, (1984) Phys. Rev. Lett., 52, p. 2164Woignier, (1984) Thesis, , University of MontpellierBrito Cruz, Scarparo, Srivastava, (1983) Rev. Bras. Fisica, 13, p. 37